* {
    border: 0;
    box-sizing: border-box;
    margin: 0;
    padding:0
}

:root {
    --hue: 223;
    --bg: hsl(var(--hue), 10%, 90%);
    --fg: hsl(var(--hue), 10%, 10%);
    --transDur: .15s;
    font-size:calc(16px +(24 - 16) *(100vw - 320px) /(1280 - 320))
}

body, button {
    color: var(--fg);
    font: 1em/1.5 "DM Sans", "Helvetica Neue", Helvetica, sans-serif
}

body {
    background-color: var(--bg);
    height: 100vh;
    display: grid;
    place-items: center;
    transition:background-color var(--transDur)
}

.notification {
    padding-bottom: .75em;
    position: fixed;
    top: -9em;
    right: 1.5em;
    width: 18.75em;
    max-width: calc(100% - 3em);
    transition: transform .15s ease-out;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select:none
}

.notification__box, .notification__content, .notification__btns {
    display:flex
}

.notification__box, .notification__content {
    align-items:center
}

.notification__box {
    animation: flyIn .3s ease-out;
    background-color: hsl(0, 0%, 100%);
    border-radius: .75em;
    box-shadow: 0 .5em 1em hsla(var(--hue), 10%, 10%, 0.1);
    height: 4em;
    transition:background-color var(--transDur), color var(--transDur)
}

.notification--out .notification__box {
    animation:flyOut .3s ease-out forwards
}

.notification__content {
    padding: .375em 1em;
    width: 100%;
    height:100%
}

.notification__icon {
    flex-shrink: 0;
    margin-right: .75em;
    width: 2em;
    height:2em
}

.notification__icon-svg {
    width: 100%;
    height:auto
}

.notification__text {
    line-height:1.333
}

.notification__text-title {
    font-size: .75em;
    font-weight:bold
}

.notification__text-subtitle {
    font-size: .6em;
    opacity:.75
}

.notification__btns {
    box-shadow: -1px 0 0 hsla(var(--hue), 10%, 10%, 0.15);
    flex-direction: column;
    flex-shrink: 0;
    min-width: 4em;
    height: 100%;
    transition:box-shadow var(--transDur)
}

.notification__btn {
    background-color: transparent;
    box-shadow: 0 0 0 hsla(var(--hue), 10%, 10%, 0.5) inset;
    font-size: .6em;
    line-height: 1;
    font-weight: 500;
    height: 100%;
    padding: 0 .5rem;
    transition: background-color var(--transDur), color var(--transDur);
    -webkit-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color:transparent
}

.notification__btn-text {
    display: inline-block;
    pointer-events:none
}

.notification__btn:first-of-type {
    border-radius:0 .75rem 0 0
}

.notification__btn:last-of-type {
    border-radius:0 0 .75rem 0
}

.notification__btn:only-child {
    border-radius:0 .75rem .75rem 0
}

.notification__btn + .notification__btn {
    box-shadow: 0 -1px 0 hsla(var(--hue), 10%, 10%, 0.15);
    font-weight:400
}

.notification__btn:active, .notification__btn:focus {
    background-color:hsl(var(--hue), 10%, 95%)
}

.notification__btn:focus {
    outline:transparent
}

@supports selector (: focus-visible) {
    .notification__btn:focus {
        background-color:transparent
    }

    .notification__btn:focus-visible, .notification__btn:active {
        background-color:hsl(var(--hue), 10%, 95%)
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: hsl(var(--hue), 10%, 10%);
        --fg:hsl(var(--hue), 10%, 90%)
    }

    .notification__box {
        background-color:hsl(var(--hue), 10%, 30%)
    }

    .notification__btns {
        box-shadow:-1px 0 0 hsla(var(--hue), 10%, 90%, 0.15)
    }

    .notification__btn + .notification__btn {
        box-shadow:0 -1px 0 hsla(var(--hue), 10%, 90%, 0.15)
    }

    .notification__btn:active, .notification__btn:focus {
        background-color:hsl(var(--hue), 10%, 35%)
    }

    @supports selector (: focus-visible) {
        .notification__btn:focus {
            background-color:transparent
        }

        .notification__btn:focus-visible, .notification__btn:active {
            background-color:hsl(var(--hue), 10%, 35%)
        }
    }
}

@keyframes flyIn {
    from {
        transform:translateX(calc(100% + 1.5em))
    }

    to {
        transform:translateX(0)
    }
}

@keyframes flyOut {
    from {
        transform:translateX(0)
    }

    to {
        transform: translateX(calc(100% + 1.5em))
    }
}